libc/kernel/uapi/linux/ublk_cmd.h

/****************************************************************************
 ****************************************************************************
 ***
 ***   This header was automatically generated from a Linux kernel header
 ***   of the same name, to make information necessary for userspace to
 ***   call into the kernel available to libc.  It contains only constants,
 ***   structures, and macros generated from the original header, and thus,
 ***   contains no copyrightable information.
 ***
 ***   To edit the content of this header, modify the corresponding
 ***   source file (e.g. under external/kernel-headers/original/) then
 ***   run bionic/libc/kernel/tools/update_all.py
 ***
 ***   Any manual change here will be lost the next time this script will
 ***   be run. You've been warned!
 ***
 ****************************************************************************
 ****************************************************************************/
#ifndef USER_BLK_DRV_CMD_INC_H
#define USER_BLK_DRV_CMD_INC_H
#include <linux/types.h>
#define UBLK_CMD_GET_QUEUE_AFFINITY 0x01
#define UBLK_CMD_GET_DEV_INFO 0x02
#define UBLK_CMD_ADD_DEV 0x04
#define UBLK_CMD_DEL_DEV 0x05
#define UBLK_CMD_START_DEV 0x06
#define UBLK_CMD_STOP_DEV 0x07
#define UBLK_CMD_SET_PARAMS 0x08
#define UBLK_CMD_GET_PARAMS 0x09
#define UBLK_IO_FETCH_REQ 0x20
#define UBLK_IO_COMMIT_AND_FETCH_REQ 0x21
#define UBLK_IO_NEED_GET_DATA 0x22
#define UBLK_IO_RES_OK 0
#define UBLK_IO_RES_NEED_GET_DATA 1
#define UBLK_IO_RES_ABORT (- ENODEV)
#define UBLKSRV_CMD_BUF_OFFSET 0
#define UBLKSRV_IO_BUF_OFFSET 0x80000000
#define UBLK_MAX_QUEUE_DEPTH 4096
#define UBLK_F_SUPPORT_ZERO_COPY (1ULL << 0)
#define UBLK_F_URING_CMD_COMP_IN_TASK (1ULL << 1)
#define UBLK_F_NEED_GET_DATA (1UL << 2)
#define UBLK_S_DEV_DEAD 0
#define UBLK_S_DEV_LIVE 1
struct ublksrv_ctrl_cmd {
  __u32 dev_id;
  __u16 queue_id;
  __u16 len;
  __u64 addr;
  __u64 data[2];
};
struct ublksrv_ctrl_dev_info {
  __u16 nr_hw_queues;
  __u16 queue_depth;
  __u16 state;
  __u16 pad0;
  __u32 max_io_buf_bytes;
  __u32 dev_id;
  __s32 ublksrv_pid;
  __u32 pad1;
  __u64 flags;
  __u64 ublksrv_flags;
  __u64 reserved0;
  __u64 reserved1;
  __u64 reserved2;
};
#define UBLK_IO_OP_READ 0
#define UBLK_IO_OP_WRITE 1
#define UBLK_IO_OP_FLUSH 2
#define UBLK_IO_OP_DISCARD 3
#define UBLK_IO_OP_WRITE_SAME 4
#define UBLK_IO_OP_WRITE_ZEROES 5
#define UBLK_IO_F_FAILFAST_DEV (1U << 8)
#define UBLK_IO_F_FAILFAST_TRANSPORT (1U << 9)
#define UBLK_IO_F_FAILFAST_DRIVER (1U << 10)
#define UBLK_IO_F_META (1U << 11)
#define UBLK_IO_F_FUA (1U << 13)
#define UBLK_IO_F_NOUNMAP (1U << 15)
#define UBLK_IO_F_SWAP (1U << 16)
struct ublksrv_io_desc {
  __u32 op_flags;
  __u32 nr_sectors;
  __u64 start_sector;
  __u64 addr;
};
struct ublksrv_io_cmd {
  __u16 q_id;
  __u16 tag;
  __s32 result;
  __u64 addr;
};
struct ublk_param_basic {
#define UBLK_ATTR_READ_ONLY (1 << 0)
#define UBLK_ATTR_ROTATIONAL (1 << 1)
#define UBLK_ATTR_VOLATILE_CACHE (1 << 2)
#define UBLK_ATTR_FUA (1 << 3)
  __u32 attrs;
  __u8 logical_bs_shift;
  __u8 physical_bs_shift;
  __u8 io_opt_shift;
  __u8 io_min_shift;
  __u32 max_sectors;
  __u32 chunk_sectors;
  __u64 dev_sectors;
  __u64 virt_boundary_mask;
};
struct ublk_param_discard {
  __u32 discard_alignment;
  __u32 discard_granularity;
  __u32 max_discard_sectors;
  __u32 max_write_zeroes_sectors;
  __u16 max_discard_segments;
  __u16 reserved0;
};
struct ublk_params {
  __u32 len;
#define UBLK_PARAM_TYPE_BASIC (1 << 0)
#define UBLK_PARAM_TYPE_DISCARD (1 << 1)
  __u32 types;
  struct ublk_param_basic basic;
  struct ublk_param_discard discard;
};
#endif